C#

int[][] myJaggedArray = { new int[] { 2, 3, 4 }, new int[] { 5, 6, 7, 8, 9 } };
for (int N = 0; N < myJaggedArray.GetLength(0); ++N)
{
    for (int M = 0; M < myJaggedArray[N].GetLength(0); ++M)
    {
        Console.WriteLine("element[{0}, {1}] = {2}", N, M, myJaggedArray[N][M]);
    }
}

WidmarkRob wrote:

and the second set of brackets are the columns?

WidmarkRob wrote:

You can declare and initialize brand-new data types and variables in the conditional expression/statement?

for (int N = 0; N < myJaggedArray.GetLength(0); ++N)

WidmarkRob wrote:

is my verbiage all wrong?

// first sample
int index;
for (index = 0; index < someValue; ++index)
{
    // do some stuff here
}
if (index == someOtherValue)
// ... at this point we can use the final value of the variable because it
//     was declared outside of the for statement.


// second sample
for (int index = 0; index < someValue; ++index)
{
    // do some stuff here
}
if (index == someOtherValue)  // ERROR
// ... at this point we cannot use the final value of the variable because it
//     was declared inside the for statement, and does not exist outside the loop.
// i.e the scope of the variable is within the for statement and its block, bounded
// by the curly braces.

Richard MacCutchan wrote:

myJaggedArray.GetLength(0);

int [][]

int [,]

WidmarkRob wrote:

Right?

using System;
using System.Text;
 
namespace Two_Dimensional_Array
{
    class Program
    {
        static void Main(string[] args)
        {
            string[,] grades = { { "Pass", "Good", "VeryGood", "Distinct" }, { "55%", "65%", "75%", "85%" } };
            string[] gradeScore = {"Grade=", "Score="};
            Console.WriteLine(gradeScore[0] + grades[0, 0] + "         " + gradeScore[1] + grades[1, 0]);
            Console.WriteLine(gradeScore[0] + grades[0, 1] + "         " + gradeScore[1] + grades[1, 1]);
            Console.WriteLine(gradeScore[0] + grades[0, 2] + "     " + gradeScore[1] + grades[1, 2]);
            Console.WriteLine(gradeScore[0] + grades[0, 3] + "     " + gradeScore[1] + grades[1, 3]);
            Console.Read();
        }
    }
}

using System;

namespace Two_Dimensional_Array
{
    class Program
    {
        static void Main(string[] args)
        {
            string[,] grades = { { "Pass", "Good", "VeryGood", "Distinct" }, { "55%", "65%", "75%", "85%" } };
            string[] gradeScore = {"Grade=", "Score="};
            for (int a = 0; a < 4; a++)
                {
                    Console.WriteLine(gradeScore[0] + grades[0, a] + "      " + gradeScore[1] + grades[1, a]);
                }
                Console.Read();
        }
    }
}

WidmarkRob wrote:

Is there some sort of extra C# technique/trick to have the columns line up?

Console.WriteLine("{0}{1,-8} : {2}{3}", gradeScore[0], grades[0, a], gradeScore[1], grades[1, a]);
// field {1} is placed in a field 8 characters wide, left aligned.

// alternatively
Console.WriteLine("Grade={0,-8} : Score={1}", grades[0, a], grades[1, a]);

int x[5];

int x[5][5];

int x[5][];

x[0] = new int[5];
x[1] = new int[2];
....etc...

int x[5][5];
x[22] = 42;

WidmarkRob wrote:

I'm not a script kiddie trying to find an easy way out…

if (x = y) {
   //do something
}

x = y;
if (x != 0) {
  //do something
}